2-METHYLTHIO-3,5-METHYLPYRAZINE
- CAS NO.：67952-65-2
- Empirical Formula: C7H10N2S
- Molecular Weight: 154.23
- MDL number: MFCD00014610
- EINECS: 267-918-3
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-07-18 05:12:15
What is 2-METHYLTHIO-3,5-METHYLPYRAZINE?
Description
2-Methyl-(3 or 5 or 6)-(methylthio)pyrazine (mixture of isomers) is like roasted almonds, hazelnuts. This may be prepared from 2-methylchloropyrazine; a mixture of 2-methyl-3-methylthiopyrazine, 2-methyl-5-methylthiopyrazine, and 2-methyl-6-methylthiopyrazine is obtained.
Chemical properties
2-Methyl-3(or 5 or 6)-methylthiopyrazine has a roasted almond, hazelnut and vegetable aroma.
Preparation
From 2-methylchloropyrazine; a mixture of 2-methyl-3-methylthiopyrazine, 2-methyl-5-methylthiopyrazine, and 2-methyl-6-methylthiopyrazine is obtained.
Aroma threshold values
Detection: 4 to 60 ppb. Aroma characteristics at 1.0%: toasted popcorn, roasted almond, hazelnut, peanut and cashewnutty, with a caramellic and corn-chip nuance.
Taste threshold values
Taste characteristics at 3 to 10 ppm: nutty, roasted and earthy with coffee and corn nuances, peanut and pecan nutty, popcorn and corn chip–like with a burnt musty nuance.
Properties of 2-METHYLTHIO-3,5-METHYLPYRAZINE
| Density | 1.145 g/mL at 25 °C(lit.) |
| refractive index | n |
| FEMA | 3208 | (METHYLTHIO)METHYLPYRAZINE (MIXTURE OF ISOMERS) |
| Flash point: | 193 °F |
| Odor | at 0.10 % in dipropylene glycol. nutty earthy peanut musty coffee vegetable |
| JECFA Number | 797 |
| CAS DataBase Reference | 67952-65-2(CAS DataBase Reference) |
| EPA Substance Registry System | Pyrazine, methyl(methylthio)- (67952-65-2) |
Safety information for 2-METHYLTHIO-3,5-METHYLPYRAZINE
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for 2-METHYLTHIO-3,5-METHYLPYRAZINE
| InChIKey | WVLCKAWPCLTOOS-UHFFFAOYSA-N |
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